At the time, we wondered whether some of the more buzzed-about tech IPOs, including Groupon, might be delayed for the same reasons. Groupon had just filed an amended S-1 form.

But later that week, some researchers stated that interest in Groupon public stock might have been waning, given the volatility of the market and the uncertain track record of tech stock and the fact that, in general, the “IPO window” seemed to be closed.

In addition to market volatility, a certain leaked document, which ruffled some feathers at the SEC, likely led to some delays. The document in question was an email sent by Groupon CEO Andrew Mason to thousands of Groupon employees defending the company’s financial health, which had been debated much by press at the time.

But since the email was sent after Groupon had filed its registration statement with the SEC, the email raised concerns about whether Mason had violated “quiet period” rules prohibiting written communications that promote company stock. Groupon had to come to a resolution with the SEC as a result.